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经营范围
发明名称
Speech diaphragm and exhalation valve
摘要
申请公布号
SG50645(A1)
申请公布日期
1998.07.20
申请号
SG19960007633
申请日期
1993.04.15
申请人
SIEBE NORTH, INC.
发明人
GRANATIERO, NINO, M.
分类号
A62B18/02;A62B18/08;A62B18/10;(IPC1-7):A62B18/08
主分类号
A62B18/02
代理机构
代理人
主权项
地址
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